システムコンテンツプロバイダにアクセスし、連絡先リストを取得

1:Contact.java

package com.example.bean;



public class Contact {

    private String name;

    private String phoneNumber;

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getPhoneNumber() {

        return phoneNumber;

    }

    public void setPhoneNumber(String phoneNumber) {

        this.phoneNumber = phoneNumber;

    }

    

}

 
2:list_contact_item.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" 

    android:layout_margin="16dp">

    

    <TextView 

        android:id="@+id/tvContactName"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:textSize="18sp"

        android:singleLine="true"

        android:ellipsize="end"/>

    <TextView 

        android:id="@+id/tvContactPhoneNumber"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:textSize="16sp"

        android:singleLine="true"

        android:ellipsize="end"/>

</LinearLayout>

 
3:ContactAdapter.java

package com.example.adapter;



import java.util.List;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.TextView;

import com.example.bean.Contact;

import com.example.contacttest.R;



public class ContactAdapter extends ArrayAdapter<Contact>{

    int resourceId;

    

    public ContactAdapter(Context context, int resourceId, List<Contact> list){

        super(context,resourceId,list);

        this.resourceId = resourceId;

    }

    

    

    @Override

    public View getView(int position, View convertView, ViewGroup parent) {

        Contact contact = getItem(position);

        View view;

        ViewHolder holder;

        

        if(convertView==null){

            view = LayoutInflater.from(getContext()).inflate(resourceId, null);

            holder = new ViewHolder();

            

            holder.tvContactName = (TextView)view.findViewById(R.id.tvContactName);

            holder.tvContactPhoneNumber = (TextView)view.findViewById(R.id.tvContactPhoneNumber);

            

            holder.tvContactName.setText(contact.getName());

            holder.tvContactPhoneNumber.setText(contact.getPhoneNumber());

            

            view.setTag(holder);

        }else{

            view = convertView;

            holder = (ViewHolder)view.getTag();

        }

        

        return view;

    }

    

    class ViewHolder{

        TextView tvContactName;

        TextView tvContactPhoneNumber;

    }

}

 
4:MainActivity.java

package com.example.contacttest;



import java.util.ArrayList;

import java.util.List;



import android.app.Activity;

import android.database.Cursor;

import android.os.Bundle;

import android.provider.ContactsContract;

import android.widget.ListView;



import com.example.adapter.ContactAdapter;

import com.example.bean.Contact;



public class MainActivity extends Activity {

    

    List<Contact> list = null;

    

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        

        setContentView(R.layout.activity_main);

        

        list = new ArrayList<Contact>();

        ListView lvContact = (ListView)findViewById(R.id.lvContact);

        ContactAdapter adapter = new ContactAdapter(this, R.layout.list_contact_item, list);

        lvContact.setAdapter(adapter);

        

        getContacts();

    }

    

    void getContacts(){

        Cursor cursor = null;

        

        try{

            cursor = getContentResolver().query(

                    ContactsContract.CommonDataKinds.Phone.CONTENT_URI, 

                    null, null, null, null);

            if(cursor!=null){

                Contact contact;

                while(cursor.moveToNext()){

                    contact = new Contact();

                    contact.setName(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)));

                    contact.setPhoneNumber(cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));

                    list.add(contact);

                }

                

                

            }

        }catch(Exception e){

            e.printStackTrace();

        }finally{

            if(cursor!=null){

                cursor.close();

            }

        }

        

    }

}

 
5:activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context="com.example.contacttest.MainActivity$PlaceholderFragment" >



    <ListView 

        android:id="@+id/lvContact"

        android:layout_width="match_parent"

        android:layout_height="match_parent"/>



</RelativeLayout>

 
6:権限の宣言

<uses-permission android:name="android.permission.READ_CONTACTS"/>